dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/common/RefereedComparator.java

45 lines
1006 B
Java

package eu.dnetlib.dhp.schema.common;
import java.util.Comparator;
import eu.dnetlib.dhp.schema.oaf.Qualifier;
public class RefereedComparator implements Comparator<Qualifier> {
@Override
public int compare(Qualifier left, Qualifier right) {
if (left == null && right == null)
return 0;
if (left == null)
return 1;
if (right == null)
return -1;
String lClass = left.getClassid();
String rClass = right.getClassid();
if (lClass.equals(rClass))
return 0;
if (lClass.equals(ModelConstants.PEER_REVIEWED_CLASSID))
return -1;
if (rClass.equals(ModelConstants.PEER_REVIEWED_CLASSID))
return 1;
if (lClass.equals(ModelConstants.NON_PEER_REVIEWED_CLASSID))
return -1;
if (rClass.equals(ModelConstants.NON_PEER_REVIEWED_CLASSID))
return 1;
if (lClass.equals(ModelConstants.UNKNOWN))
return -1;
if (rClass.equals(ModelConstants.UNKNOWN))
return 1;
// Else (but unlikely), lexicographical ordering will do.
return lClass.compareTo(rClass);
}
}